US 12,424,020 B2
Contactless biometric acquisition sensor and method
Joël-Yann Fourre, Courbevoie (FR); Alexis Sireta, Courbevoie (FR); and Jean Beaudet, Courbevoie (FR)
Assigned to IDEMIA IDENTITY & SECURITY FRANCE, Courbevoie (FR)
Appl. No. 18/565,119
Filed by IDEMIA IDENTITY & SECURITY FRANCE, Courbevoie (FR)
PCT Filed May 19, 2022, PCT No. PCT/EP2022/063660
§ 371(c)(1), (2) Date Nov. 29, 2023,
PCT Pub. No. WO2022/253587, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 21 05814 (FR), filed on Jun. 2, 2021.
Prior Publication US 2024/0371195 A1, Nov. 7, 2024
Int. Cl. G06V 40/13 (2022.01); G06V 40/12 (2022.01)
CPC G06V 40/1312 (2022.01) [G06V 40/1376 (2022.01); G06V 40/1388 (2022.01)] 15 Claims
OG exemplary drawing
 
1. A contactless biometric sensor, comprising:
an upper face above which, in use, a human body part which has dermatoglyphs is positioned;
a lighting source configured to light said human body part through the upper face; and
an imager configured to acquire an image of said human body part through the upper face, wherein
the upper face is provided with a mask having spatially variable light transmissivity, said mask, in use, introducing onto said human body part a projection, referred to as lighting projection, of a test pattern having a spatial modulation of light intensity, said mask also introducing a projection, referred to as imaging projection, of said pattern into the image acquired by the imager.